Error applying migrations dynamically with Npgsql and EF Core 9: Collation configuration not found in read-optimized model

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Issue 类型
缺陷
描述清晰度
基本清楚
活跃度
停滞
技术栈
csharp, postgresql
领域
databases

调研方向

Start by reproducing the failure with EF Core 9.0.7 and Npgsql.EntityFrameworkCore.PostgreSQL 9.0.4, using the multitenant context factory and calling Database.MigrateAsync(). Follow the reported stack trace from MigrationsModelDiffer.Diff through Migrator.HasPendingModelChanges; done means migrations apply without the collation exception, or the failure is narrowed to a minimal reproducible case.

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描述

Hello I encountered an error while applying migrations dynamically on mi multitenant application using EF Core 9.0.7 and Npgsql.EntityFrameworkCore.PostgreSQL 9.0.4.

When I try to apply migrations to a specific schema I get the following exception:

System.InvalidOperationException: The requested configuration is not stored in the read-optimized model, please use 'DbContext.GetService<IDesignTimeModel>().Model'.
Stack trace:
   at Microsoft.EntityFrameworkCore.RelationalModelExtensions.GetCollation(IReadOnlyModel model)
   at Microsoft.EntityFrameworkCore.Metadata.IRelationalModel.get_Collation()
   at Microsoft.EntityFrameworkCore.Migrations.Internal.MigrationsModelDiffer.Diff(IRelationalModel source, IRelationalModel target, DiffContext diffContext)
   at Microsoft.EntityFrameworkCore.Migrations.Internal.MigrationsModelDiffer.HasDifferences(IRelationalModel source, IRelationalModel target)
   at Microsoft.EntityFrameworkCore.Migrations.Internal.Migrator.HasPendingModelChanges()
   at Microsoft.EntityFrameworkCore.Migrations.Internal.Migrator.ValidateMigrations(Boolean useTransaction, String targetMigration)
   at Microsoft.EntityFrameworkCore.Migrations.Internal.Migrator.<MigrateAsync>d__22.MoveNext()
   at Npgsql.EntityFrameworkCore.PostgreSQL.Migrations.Internal.NpgsqlMigrator.<MigrateAsync>d__4.MoveNext()

The error happens when applying a migration:

public async Task<ClientMigrationResponse> ApplyOneClientMigrationsAsync(string clientCode)
{
    var clientContext = clientContextFactory.CreateContext(clientCode);
    try {
        // Error happens here
        await clientContext.Database.MigrateAsync();
    }
    catch (Exception ex) {
        // Error handling...
    }
}

To give some additional context I use a multitenant approach where each client has a different schema on my PostgreSQL database; I have a factory that dynamically creates contexts for each client/schema. I don't have any specific configration about collation on my model

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